I can´t think of any good site for that purpose. There are places in which you can find free books, both in English (mostly) and in Spanish (few), such as "Project Gutenberg", but they tend to be "old books", and old Spanish, as old English is sometimes not easy to understand, and they both use expressions which are obselete nowadays.
In my opinion, one of the best ways to compare equivalent sentences in both (modern) languages are bilingual DVDs: watching a movie (or part of it) in both languages. But that is not free. It can be cheap, if you rent the DVDs or you buy films which are not recent hits, but not free.
Answer from Nacho on Stack ExchangeVideos
I can´t think of any good site for that purpose. There are places in which you can find free books, both in English (mostly) and in Spanish (few), such as "Project Gutenberg", but they tend to be "old books", and old Spanish, as old English is sometimes not easy to understand, and they both use expressions which are obselete nowadays.
In my opinion, one of the best ways to compare equivalent sentences in both (modern) languages are bilingual DVDs: watching a movie (or part of it) in both languages. But that is not free. It can be cheap, if you rent the DVDs or you buy films which are not recent hits, but not free.
My favorite site is the International Children's Digital Library which also has an iOS app if you're so inclined. It essentially presents a searchable collection of scanned children's books in many different languages and skill levels. There are many filtering criteria which makes it easy to browse. Create a login for free to save your favorites. The amazing thing about the entire site is that it's entirely free.
I want to share with you the app called Language Flower. Here you can read books with parallel translation, translate words individually and listen to pronunciation. The app can be useful for both beginners and more experienced learners to increase their vocabulary and just enjoy reading. Books are translated in 8 languages.
Also worth noting that I'm the creator of Language Flower. The app is free and I hope you will like it. Please share your feedback in comments.
App Store:
https://apps.apple.com/app/id1419671135
Google Play:
https://play.google.com/store/apps/details?id=com.duoreading
